Bouncing Idle K20A3 w/ K20A2 intake manifold

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frostydc
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Bouncing Idle K20A3 w/ K20A2 intake manifold

Post by frostydc » Tue Nov 27, 2018 3:48 pm

I have disabled the secondary runners through Kpro and it is bouncing idle from ~1500-2800 rpm. I put in a new throttle body gasket, intake manifold gasket, and am not finding any open vacuum lines. Tried a different map sensor and same results. I've attached a quick datalog as well as the base rsx tune I'm using. Am I missing something?
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rsx base.kal
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bouncing idle.kdl
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Spunkster
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Re: Bouncing Idle K20A3 w/ K20A2 intake manifold

Post by Spunkster » Tue Nov 27, 2018 4:03 pm

Have you tried cleaning the idle controller?

frostydc
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Re: Bouncing Idle K20A3 w/ K20A2 intake manifold

Post by frostydc » Wed Nov 28, 2018 7:30 am

Yes I did, forgot to mention that.

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Re: Bouncing Idle K20A3 w/ K20A2 intake manifold

Post by Spunkster » Wed Nov 28, 2018 10:58 am

You appear to still have some kind of air leak, or the idle controller is stuck.

frostydc
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Re: Bouncing Idle K20A3 w/ K20A2 intake manifold

Post by frostydc » Fri Nov 30, 2018 2:32 pm

The throttle plate was worn enough that it was letting air in even when closed. Sprayed the inside with Moly Lube and it sealed it up, so now it idles fine.

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